"If you're not concerned about AI safety, you should be. Vastly
more risk than North Korea," Musk tweeted
after his $1 billion startup, OpenAI,
made a surprise appearance at a $24 million video game
tournament Friday night, beating the world's best players in the
video game, "Dota 2."

Musk claimed OpenAI's bot was the first to beat the world's best
players in competitive eSports, but quickly warned that
increasingly powerful artificial intelligence like OpenAI's bot —
which learned by playing a "thousand lifetimes" of matches
against itself — would eventually need to be reined in for our
own safety.

"Nobody likes being regulated, but everything (cars, planes,
food, drugs, etc) that's a danger to the public is regulated. AI
should be too," Musk said in
another tweet on Friday night.

Musk has previously expressed a healthy mistrust of artificial
intelligence. The Tesla and SpaceX CEO warned in 2016 that, if
artificial intelligence is left unregulated, humans could devolve
into the equivalent of "house cats" next to increasingly powerful
supercomputers. He made that comparison while hypothesizing about
the need for a
digital layer of intelligence he called a "neural lace" for
the human brain.

"I think one of the solutions that seems maybe the best is to add
an AI layer," Musk said. "A third, digital layer that could work
well and symbiotically" with the rest of your body," Musk said
during Vox Media's 2016 Code Conference in Southern California.